Disease activity, resilience and health-related quality of life in Chinese patients with rheumatoid arthritis: a multi-center, cross-sectional study

Table 4 Hierarchical regression for exploring the correlates of PCS

Variables	Step 1		Step 2		Step 3		Step 4
Variables	β	P	β	P	β	P	β	P
Gender	−0.081	0.156	−0.092	0.089	−0.093	0.086	−0.101	0.062
Age	−0.166	0.005	−0.118	0.036	−0.119	0.035	−0.129	0.023
Marital status	−0.011	0.843	−0.004	0.938	−0.002	0.971	−0.001	0.991
Residence	−0.121	0.039	−0.095	0.085	−0.094	0.088	−0.094	0.089
Anemia	0.177	0.002	0.113	0.040	0.113	0.040	0.117	0.034
EMS
Dummy_1	−0.079	0.228	0.059	0.370	0.061	0.356	0.053	0.428
Dummy_2	−0.145	0.027	0.028	0.677	0.029	0.668	0.028	0.677
DAS28-CRP			−0.374	< 0.001	−0.377	< 0.001	−0.375	< 0.001
Resilience					−0.016	0.773	−0.004	0.949
DAS28-CRP*Resilience							0.078	0.155
F	4.128		8.781		7.790		7.239
Adjusted R ²	0.069		0.173		0.171		0.174
ΔR ²			0.105		< 0.001		0.006

Gender, women versus men; Marital status, married/cohabited versus single/divorced/widowed/separated; Residence, rural versus urban; Anemia, no versus yes; Dummy_1, EMS ≤ 1 versus no; Dummy_2, EMS > 1 versus no. * Indicated multiplication. Abbreviations: PCS, physical component summary; EMS, early morning stiffness; DAS28-CRP, Disease Activity Score 28-C-reactive protein

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